2021 GMC Sierra 1500 MPG
Based on data from 240 vehicles, 14,991 fuel-ups and 5,716,120 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.32 with a 0.09 MPG margin of error.
Below you can see a distribution of the fuel-ups with 78 outliers (0.52%) removed.
Following shows the average MPG of each of the 240 vehicles in the system.
2021 GMC Sierra 1500s For Sale Nearby
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2021 GMC Sierra AT4
2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Feb 2024 • 49 Fuel-upsProperty of banditz
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20.8 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2022 • 33 Fuel-upsProperty of mnm6080
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22.9 Avg MPG
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21 Sierra 1500
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
Added Jul 2021 • 77 Fuel-upsProperty of Corelax
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22.2 Avg MPG
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'21 White AT4 DuraMax
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Dec 2020 • 132 Fuel-upsProperty of APokowski
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20.6 Avg MPG
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Dangmc
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Dec 2023 • 3 Fuel-upsProperty of Dangmc
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23.0 Avg MPG
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Sierra 1500
2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
Added Dec 2020 • 171 Fuel-upsProperty of rdurbin
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15.5 Avg MPG
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GMC
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Apr 2023 • 19 Fuel-upsProperty of l1tech
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22.4 Avg MPG
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2021 Sierra 1500
2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Feb 2021 • 149 Fuel-upsProperty of Bost05
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14.5 Avg MPG
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Family Hauler
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
Added Dec 2021 • 63 Fuel-upsProperty of 2013RAM2500
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23.7 Avg MPG
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GMC Sierra 1500
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Nov 2023 • 3 Fuel-upsProperty of firemech
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35.7 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
Added Dec 2021 • 62 Fuel-upsProperty of dphi201
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23.4 Avg MPG
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Bigfoot
2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Mar 2022 • 75 Fuel-upsProperty of White-Denali
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16.0 Avg MPG
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My Sierra 1500
2021 GMC Sierra 1500 Denali 3,0L L6 DIESEL Automatic 10 Speed
Added Apr 2021 • 12 Fuel-upsProperty of shadow_za
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23.4 Avg MPG
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3.0 AT4
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Sep 2021 • 59 Fuel-upsProperty of Timmy59360
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22.9 Avg MPG
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Sierra
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jan 2022 • 72 Fuel-upsProperty of jc9995
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25.5 Avg MPG
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Denali
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Apr 2021 • 114 Fuel-upsProperty of stagrlee
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19.0 Avg MPG
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GMC
2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
Added Jan 2022 • 43 Fuel-upsProperty of johnny91750
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25.9 Avg MPG
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Thot Yacht
2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jun 2021 • 73 Fuel-upsProperty of TrevorBarrett
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23.7 Avg MPG
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Sierra Duramax
2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
Added Oct 2022 • 26 Fuel-upsProperty of BBJ1
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22.2 Avg MPG
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Arnold
2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
Added Nov 2020 • 281 Fuel-upsProperty of st333
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14.7 Avg MPG